fix(web): pending-approvals-card 加防重複點擊 + loading 狀態

linter 自動強化: actioningId state 防止同一張卡重複操作
- disabled + opacity 0.6 + cursor not-allowed
- loading 時按鈕顯示 '...'
- finally() 確保 actioningId 清除

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/src/components/panels/CompliancePanel.tsx

@@ -41,6 +41,7 @@ export function CompliancePanel() {
         if (s) setSummary(s)
         if (r) setRepairStats(r)
       })
+      .catch(() => setError('load_failed'))
       .finally(() => setLoading(false))
   }, [])